(1 point) The matrix A = 1-6 1 8 k] 4 has two distinct real eigenvalues...
(1 [xii) Ic: aix has two distinct real eigenvalues if and only if k >
(1 point) The matrix -1 -1 01 A = -16 0 Lk 0 has three distinct real eigenvalues if and only if -17.036 <k< 29.184
Find the matrix A that has the given eigenvalues and corresponding eigenvectors. a1 = -1 → >, 22 = 0 → 1 -1 0 2 -1 1 A= -1 -1 1 x
(1 point) The matrix 2 -1 0 A2-3 -1 has three distinct real eigenvalues if and only if
(1 point) The matrix 2 -1 0 A2-3 -1 has three distinct real eigenvalues if and only if
(1 point) Consider the matrix 7 -8 0 -8 -5 -1 -8 8 -4 (a) On the matrix above, perform the row operation 6R3 + R2 -> R2. The new matrix is: (b) On the original matrix, perform the row operation -17R2 -+ R2. The new matrix is: (c) On the original matrix, perform the row operation R2 R3. The new matrix is:
Problem 8: (11 total points) Suppose that B is a nx n matrix of the form B = Viv] + v2v + V3v3, where V1, V2, V3 € R”, n > 3 are nonzero column vector and are orthogonal. a) Show that B is a positive semidefinite matrix. b) Under which condition, B will be a positive definite matrix? c) Let A be 3x3 real symmetric matrix with eigenvalues 11 > 12 > 13. Let F be a positive definite...
Suppose that A is diagonalizable and all eigenvalues of A are
positive real numbers. Prove that det (A) > 0.
(1 point) Suppose that A is diagonalizable and all eigenvalues of A are positive real numbers. Prove that det(A) > 0. Proof: , where the diagonal entries of the diagonal matrix D are Because A is diagonalizable, there is an invertible matrix P such that eigenvalues 11, 12,...,n of A. Since = det(A), and 11 > 0,..., n > 0,...
(1 point) The matrix 4-4 A 0 -8 0 4 has two real eigenvalues, one of multiplicity 1 and one of multiplicity 2. Find the eigenvalues and a basis for each eigenspace The eigenvalue A, is and a basis for its associated eigenspace is The eigenvalue A2 is and a basis for its associated eigenspace is
8. (14 points) Let dj = 1, a2 = 4, and an = 2an-1 - An-2+2 for n > 3. Prove that an = n2 for all all natural numbers n.
(1 point) Find the eigenvalues of the matrix A . -19 6 0 0 -36 11 0 0 A= The eigenvalues are λ| < λ2 < λ3 < λ4, where has an eigenvector 12 has an eigenvector has an eigenvector 4 has an eigenvector Note: you may want to use a graphing calculator to estimate the roots of the polynomial which defines the eigenvalues